\begin{itemize}

  \item does not start on line does not start on line does not start on line oes not start aa a a a a a a a a a a a a a a a a a a a a a a a a a a a a aa a a a a a a a a a a a a a a a a a a a  

    Recall Euler's formula for planar graphs, \(V+E-F=2\).
 \item 
   starts on own line
   starts on own line
   starts on own line aa a a a a a a a a a a a a a a a a a a a a a a a a a a a a aa a a a a a a a a a a a a a a a a a a a  
\begin{itemize}

  \item Let \(G\) be a maximal planar graph; we wish to show that every drawing of \(G\) has only triangular faces (counting the ``unbounded'' face also as a triangle).

    Recall Euler's formula for planar graphs, \(V+E-F=2\).

\end{itemize}

\end{itemize}
